As I mentioned in a previous message about observed anomalies with the DST change on DCF77, Pieter-Tjerk in the Netherlands noted that the time encoded on the phase-modulated carrier of the BBC's 198KHz signal in the UK was about 900 milliseconds early. Having queried that with a contact in the BBC, a problem was found and corrected, but Pieter-Tjerk reports the signal is now about 90 milliseconds late. A further query with my contact reveals that this is to be expected. The signal to be phase-modulated is assembled at our Crystal Palace transmitter is south-east London, and then sent (over fibres) to Droitwich in the midlands, and Westerglen and Burghead in Scotland. Coding and decoding delays on that transmission path result in the observed delay. No compensation is attempted, as the result is perfectly adequate for the intended use - controlling off-peak electricity time switches. I hope this info is of interest to our European members.
Peter _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
